1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6921019d47fd6aa30a568531f632edef647ffff438c18c03e8f844b4bc100607. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09e9e27c-a7df-4db5-8648-387b454d0af7.json and https://artists.proofprofile.net/proofs/artist/09e9e27c-a7df-4db5-8648-387b454d0af7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584c8ca418617265a128697a0154e660fbcd906e2d3983e92437dca963e2133. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2156662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f67b055982b4f22bcadbfa47906cf7f9bb1219ee53a742ed6d0efba80be6cc5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2152233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf4e6386627f62b03779ebff82a50cea5db70c08e01bd221abdb3c875c26671. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2463436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd263295f635a09a78ebb3c9ec1b1eb4bae02bc3bb74d43fb3ae2b0afd861f8a6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2463437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdbd1d40c14caa42517868856dacf35a8711ab1c2cd1ca796ae16bc6790b3b5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6P2480675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90356e31cb4a9247345549e5689e517692da720e42791bf66831ea92c26c845c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2445988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c12f214f12c8db1035ab25e4f836b1408f6f150a67827685ddeeed699786695. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ32437375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad855935facad9417fc55a5f7a8b921a7d5af0da8974e1d0ca1ff208f4cd3a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHQ2374857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e83a9e11c5157b3e52e3ad7e5168fd18b6bba3024aa48e37198e22b1a565867. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHQ2374867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8110b55df2d57878bdbd58c342609f950d7e5189c7c0d35aa2d2bbb0aad60954. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2391988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d70471be91c80231d552d13b8901b507f2def6859b8f75af758e1a17dcc5579. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2389362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9baced47d47671d7c66494dcb67d2d33c6a128a151cb0a7942ef02729e0681. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHL2332461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d0bcd6b3eeaf7b72566be8686ce4d1de5b04816452ac7833902c8e06da0417. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAHK2341053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6922cad735bf3a9d4ae97b95ca4c524b7c1f30488f63a42988cf19d56719df6b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2396035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd590defa3af32b6292d3d3b595fd504fa8f104b55153f28c26b73d76fabc64ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2344919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9911a141ebf8c378db42ee9c4852560bda2ac3cd18334faa0ea16dceaff781f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2342282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fd3179ac6f12712bf39651ab0b0630cb5bb0544c44076c7e9c9011896d967a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2338377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa303cff8725ad1fbcc6a3f3efbfc033c8d2752bd81bf1479417b46dacdfe47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2323965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a1309f5f2f37c7b794354266ea7b2eac11d2de61153bc704e98f21153d1832. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CA5KR2317126.
Boquita de Caramelo Guaracha "Tus Besos Son"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeeac25a73dfefd3b8d47e163becde422dc9398bf74df483e6a66a5fa3a58e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES75E2100618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bea86388f63d7b736713012a237cf723677133020905120e5ed6b998f364d1c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012063613.